import type { GraphQLFormattedError } from "graphql";
/**
 * Fatal transport-level errors returned when executing a subscription using the
 * multipart HTTP subscription protocol. See the documentation on the
 * [multipart HTTP protocol for GraphQL Subscriptions](https://www.apollographql.com/docs/graphos/routing/operations/subscriptions/multipart-protocol) for more information on these errors.
 */
export declare class CombinedProtocolErrors extends Error {
    errors: ReadonlyArray<GraphQLFormattedError>;
    constructor(protocolErrors: Array<GraphQLFormattedError> | ReadonlyArray<GraphQLFormattedError>);
}
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